308 XCOVI. LABIATA. 
18. TEUCRIUM, Linn. 
Calyx tubular or bell-shaped, rarely inflated, 5-toothed, the 
teeth equal or the upper larger.  Corolla-tube short, not 
ringed within, the 4 upper lobes subequal or unequal, either 
oblong and bent down or very short, erect, the lowest very — 
large, “often concave. Stamens 4, exserted between the upper 
lobes of corolla, the lower pair longer ; anther-cells confluent. 
Style 2-fid. Nuts mostly roughly ridged, oblique at base.— 
DC. Prod. xii. p. 574, 
A large and dispersed genus of herbs and shrubs.—3 Cape species, 
Eastern and at Natal. 
19. AJUGA, Linn. 
Calyx ovate or globose-bellshaped, subequal, 5-fid or 5- 
toothed. Corolla-tube included or exserted, mostly annulate 
within, straight or half-twisted; limb 2-lipped, the upper lip 
very short, ‘slightly emarginate, lower elongate, spreading, 
3-fid, the side-lobes oblong, the medial wider, emarginate or 
2-fid. Stamens 4, ascending, mostly exserted, "the lower pair 
longer; anthers with divaricating, at length confluent cells. 
Style subequally 2-fid— DC. Prod. xii. p. 595. 
Herbs of the Old World ; but 1 Cape species (4. Ophrydis, Burch.), which 
is very common in the Eastern district. Whorls axillary, or the upper 
spiked. Flowers often blue. 
Orper XCVII. NYCTAGINER, 
Flowers often involucrate or bracteate. Calyx corolloid, 
tubular, bell-shaped or funnel-shaped, often constricted in the 
middle, subentire or toothed, the lower part becoming har- 
dened, persistent, and enclosing the fruit, the upper mostly 
falling off. Stamens definite, hypogynous. Ovary 1-celled, 
free ; ovules solitary, erect; style filiform. Fruit enclosed 
within the hardened base of the calyx. Embryo curved round 
the albumen; radicle inferior; cotyledons leafy.—Leaves 
an genus. 
1. BOERHAAVIA, Linn. 
Bracts mostly deciduous. Calyx jointed in the middle, 
the lower part cylindrical or obconic, persistent; the upper 
funnel- or bell-shaped, coloured, deciduous, shortly 5-lobed. 
Stamens 1, 2, 3, rarely 4, combined in a hypogynous ring, 
mostly exserted ; anthers minute, roundish. Ovary minute; 
style as long as the stamens ; stigma obtuse. Fruit enclosed 
